Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d7712924359c8b…

MALICIOUS

PDF

48.5 KB Created: 2021-05-20 01:42:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d66d075e9e42d699622dd5fad6785c3d SHA-1: 2a8e89397915a1ade15ae655c0af9a884127f34b SHA-256: e7d7712924359c8b96e6674f9354ecf355aece2739d0517920bcea4c713622de
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free spins' to entice users into clicking embedded links. The PDF contains a large number of external links, many pointing to SEO-optimized pages on szekelymozes.ro, suggesting a link farm designed to redirect users to potentially malicious content or downloads. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-2021-apk-game-hack, is also associated with this lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-free-spins-2021-apk-game-hack PDF link annotation
    • http://szekelymozes.ro/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://szekelymozes.ro/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/tiktok-free-videos_GM835599320.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ba6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA6 25864 bytes
SHA-256: 2e2293c7aa2fc21491a0e9984feaefbacef029b7272200dd57b0defa360c5eb4
font_01_sfnt_off0000859b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F86 18456 bytes
SHA-256: 36172b8199ed8392a16c1209cf3a913f384f74be331676b8a446cb929dbf73c8
font_03_sfnt_off0000b225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB225 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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